I think it was very important that she stuck with it a while longer, and learned not to give up right away. This way, she pursued and met a specific goal--the black belt--with the idea that she could reassess after meeting that goal. At least, that's how I understand what you've written (if my memory hasn't gone all to toast by now). I'm very impressed with Delia and proud of her, too. ;-)

As for yourself... well, I doubt you really need any advice. ;-) Common sense self-care and all that; long-range benefits over short-term impatience; etc. Be gentle with yourself.